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KakaoBank Corp.
KakaoBank is an internet-only bank that serves retail customers in South Korea through a mobile app.
KakaoBank is a bank with no branches. It runs entirely through a smartphone app, and it uses that app to take deposits, make loans, and move money for ordinary people in South Korea. Customers open an account in minutes, without ever visiting a building or talking to a teller.
The bank makes most of its money the way banks always have: it pays customers a little interest on their deposits, lends that money out at a higher rate, and keeps the difference. It also earns fees on everyday services, and it makes money from lending to people who might struggle to get credit from a traditional bank. Its roots are in Kakao, the messaging app that nearly every South Korean uses, which gave it a huge built-in audience from day one. That platform is the whole point. Because everything happens on a phone, KakaoBank carries far fewer costs than a branch-based rival, and it can offer simpler, faster products to people who find big banks slow and paperwork-heavy. It started with deposits and cards, then pushed into personal credit and mortgages, and has been expanding into wealth management and overseas services. That puts it in direct competition with the big established banks and other digital players chasing the same customers.
The tension in the business is that lending is only as safe as the borrowers behind it. Growth is fast, but credit quality and loan losses are the things to watch, and so is the reach of South Korean regulators, who keep a close eye on how aggressively online banks expand. A branchless bank can scale quickly and cheaply, but it cannot hide from a rough patch in consumer credit.
Saved answer · last researched 12 Nov 2026